检测真实文件类型 [英] Detect the real file type
问题描述
你好!
检查扩展名,并非总是可以提供真实的文件类型.例如,一个.mp3文件被错误地更改为.xls,但该文件仍然是mp3文件,而不是excel文件.
Checking the extension , not always can give the real file type. For example a .mp3 file by mistake is changed to .xls , but the file is still an mp3 file and not an excel file.
有什么方法可以检测真实文件的类型?
Is there any way to detect the real file's type ?
(我对Excel和Word文件特别感兴趣).
( I'm interested especially for Excel and Word files ).
谢谢!
推荐答案
您能告诉我们您的源代码吗?
'---的扩展名" C:\ filename.xls"
stExtension 字符串 C:\ filename.xls '-显示扩展名
.Show(stExtension)
Hi,
Could you show us your source code?
' --- get the extension of "C:\filename.xls"
Dim stExtension AsString = System.IO.Path.GetExtension("C:\filename.xls")
' --- display extension
MessageBox.Show(stExtension)
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